Small data centres deployed at the Edge of networks are growing in importance as the demand for digital services continues to surge.
Many infrastructure Vendors have responded with the development of self-contained prefabricated and highly integrated pods that allow small data centres to be deployed quickly, reliably and cost effectively. An added benefit of prefabricated micro data centre infrastructure is that it can be combined to form the larger IT facilities many organisations require as their needs grow, but who cannot afford the larger up-front costs of building a new traditional, or purpose built data centre.
A new white paper from Schneider Electric, the global specialist in energy management and automation, explains how data centres can be deployed using prefabricated micro data centres. Entitled "Cost Benefit Analysis of Edge Micro Data Center Deployments", White Paper No 223, establishes why micro data centres are best suited to support edge computing over other alternatives such as server rooms and traditional builds.
The paper explains the drivers that favour the adoption of small prefabricated and integrated, micro data centres. These are: scalability – the need to match increasing IT capacity more closely to expected load; speed of deployment to respond rapidly to changing requirements; reliability; and the desire to outsource applications to the cloud or colocation facilities, a growing trend but one that is frequently accompanied by a desire to keep certain legacy or mission critical applications hosted on infrastructure in house.
Key technology drivers enabling the miniaturisation of data centres include: compaction of IT equipment—led by ever more powerful and smaller silicon chips, all IT components from processing elements and networking equipment to storage arrays are becoming smaller; hyperconvergence – which allows several subsystems, including processor elements, networking technology, disks and solid-state mass storage to be integrated into a single enclosure; and virtualisation which allows a single element to run many different applications simultaneously.
As well as providing 'out of the box' IT infrastructure cost effectively and reliably, the paper proposes a future micro data centre architecture that could replace traditional enterprise data centres for certain applications.
The White Paper reports on a study carried out by Schneider Electric using its own 'Data Center Capital Cost Calculator' TradeOff Tool which compares the cost effectiveness of a single traditional data centre of 1MW capacity against a cluster of 200 Micro data centres each of 5kW capacity. The study finds that so long as network latency is not a vital factor, the micro data centre approach offers considerable savings in capital expenditure because one does not have to build an entirely new facility and therefore can exploit the sunk costs in terms of building space, utility power, back-up generators and cooling that has already gone into an existing facility.
If some of the 200 micro data centres are geographically located away from the others, network latency might be affected and there may therefore be some instances when the purpose built approach, with all the IT in the same location may be preferable.
White Paper No 223, "Cost Benefit Analysis of Edge Micro Data Center Deployments" is available for free download by visiting http://www.apc.com/wp?wp=223
About the author
Victor Avelar is a Director and Senior Research Analyst at Schneider Electric's Data Center Science Center. He is responsible for data centre design and operations research and consults with clients on risk assessment and design practices to optimise the availability and efficiency of their data centre environments. He holds a bachelor's degree in mechanical engineering from Rensselaer Polytechnic Institute and an MBA from Babson College.
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